Possible Water Flows on Mars

This proposed future Mars landing site in Acidalia Planitia targets densely occurring mounds thought to be mud volcanoes.

Lyot Crater, pictured here, is one of at least nine craters in the northern lowlands of Mars with exposures of hydrated minerals detected from orbit, according to a June 25, 2010, report.

This pair of images taken one day apart by the Mars Color Imager (MARCI) weather camera on NASA's Mars Reconnaissance Orbiter reveals when an asteroid impact made the scar seen in the right-hand im...

Sand dunes are among the most widespread wind-formed (aeolian) features present on Mars.

In early 2017, after more than a decade of observing Mars, the Context Camera on NASA's Mars Reconnaissance Orbiter (MRO) surpassed 99 percent coverage of the entire planet. This mosaic shows that...

This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter shows sedimentary-rock layering in which a series of layers are all approximatel...

This image taken by NASA’s Mars Reconnaissance Orbiter shows ice sheets at Mars’ south pole. The spacecraft detected clays nearby this ice; scientists have proposed such clays are the source of rad...

The battered region of Arabia Terra is among the oldest terrain on Mars.

This HiRISE image shows a portion of interior layered deposits (ILD) in Juventae Chasma. Juventae Chasma is a large depression near the equatorial canyon system Valles Marineris.

A towering dust devil, casts a serpentine shadow over the Martian surface in this image acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbi...

This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today.

This oblique view with moderate vertical exaggeration shows the portion of the rim of Endeavour crater given the informal name "Spirit Point." This is the location where the team operating NASA's ...

This image contrasts gullies and recurring warm-season slope flows appearing in the same crater, in the middle southern latitudes of Mars.

This image shows a graben (a trough formed when the ground drops between two parallel faults) and a lava flow in the Tharsis volcanic province of Mars. North is up.

Artist's concept of Mars Reconnaissance Orbiter

This image acquired on November 30, 2018 by NASAs Mars Reconnaissance Orbiter, shows a complex crater, where we see bedrock in several locations from different depths in the crust.

Download a PDF of the Mars as Art Booklet.

This crater has gullies on its southwest-facing walls and rim, as well as and what appears to be two separate instances of lobate (ear-shaped) material associated to its interior gullies.

These images from the Context Camera on NASA's Mars Reconnaissance Orbiter were taken before and after an apparent impact scar appeared in the area in March 2012. Comparing the Jan. 16, 2012, image...

Interact with this 3D model of the Mars Reconnaissance Orbiter.

This HiRISE image shows gullies on a south-facing slope of a crater touched with late-Spring carbon dioxide frost. At this time of year, only the south-facing slopes of craters retain their frost, ...

This graphic shows Martian atmospheric temperature data related to seasonal patterns in occurrence of large regional dust storms.

Snow falls and ice and frost form on Mars, too. NASA's spacecraft on and orbiting the Red Planet reveal the similarities to and differences from how we experience winter on Earth.  

More evidence of a dynamic Mars is revealed at the edge of a martian dune field.

These views of sites where hardware from Europe's Schiaparelli test lander hit Mars on Oct. 19, 2016, combine two HiRISE camera orbital views from different angles, as a stereo pair for viewing wit...